Sextus Marius, the richest man in Spain, was next accused of incest with his daughter, and thrown headlong from the Tarpeian rock. To remove any doubt that the vastness of his wealth had proved the man's ruin, Tiberius kept his gold-mines for himself, though they were forfeited to the State. Executions were now a stimulus to his fury, and he ordered the death of all who were lying in prison under accusation of complicity with Sejanus. There lay, singly or in heaps, the unnumbered dead, of every age and sex, the illustrious with the obscure. Kinsfolk and friends were not allowed to be near them, to weep over them, or even to gaze on them too long. Spies were set round them, who noted the sorrow of each mourner and followed the rotting corpses, till they were dragged to the Tiber, where, floating or driven on the bank, no one dared to burn or to touch them. The force of terror had utterly extinguished the sense of human fellowship, and, with the growth of cruelty, pity was thrust aside.